Cover image for Interior noise reduction in a large civil helicopter
Interior noise reduction in a large civil helicopter
Title:
Interior noise reduction in a large civil helicopter
Author:
Howlett, James T.
Publication Information:
Washington : National Aeronautics and Space Administration ; Springfield, Va. : for sale by the National Technical Information Service, 1977.
Physical Description:
41 pages : illustrations ; 27 cm.
General Note:
Issued July 1977.
Language:
English
Subject Term:
Added Author:
Format :
Book